In this video we demonstrate how Co2 levels can concentrate quickly from the respiration of the occupants inside the Cabin.

There are many reports / studies completed on Co2 concentration in Vehicles that prove with a single Occupant that the Co2 can increase to >3,000 ppm within 8.0 minutes- this is more than 3 x times the WHO (WorldHealth Organisation) / (AIHRA) Australian Institute of Heating Refrigeration and Air- conditioning recommend.

Test Procedure:In this test our Philip Beckett demonstrated how quickly Co2 will concentrate inside a Cabin- with a single occupant. By turning off the RESPA® External Filtration Unit we simulated a blocked External Filter or situations where an Operator may switch their Air- conditioning System to Recirculation Air only (to avoid entry of contamination, high / low ambient temperatures, inefficient Air- conditioning, etc). So we only had the Recirculation Air Unit operational.

AIHRA recommend that "Exhaust Air Leakage"- fresh air displacement should be 10- 15 litres / second for each Occupant inside a Cabin. In our test the RESPA® External Filtration Unit provided >25 l /sec of Fresh Air to the Cabin for this Quality Cabin Environmental Air System design. For Cabins with more Occupants- eg Light Vehicles we provide different designs for increased air supply.

Test Results:Testing demonstrated in the Video below that:

Firstly the External Air Unit was turned off and the Recirculation Air Unit left Operational only.

As displayed on the LCD Monitors the Co2 Sensor inside the Cabin quickly depicted an increase in Co2 Concentration (outside levels are normally <600 ppm) of >3,000 ppm within 12 minutes. Consider that Phil was not driving / operating a machine, talking on the radio, concentrating, etc. Subsequently, it would be reasonable to presume that if Phil was working normally he would have a higher respiratory rate and so Co2 concentration would have been even more excessive- and increased more quickly.

With our Continuous Improvement Philosophy, LSM Technologies aims to ensure that we continue to add- value to our Services and Product Technologies, so as to maintain our position as "the best supplier imaginable" to our customers.